(x-5)(x-10)=x(x+5)

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Solution for (x-5)(x-10)=x(x+5) equation:


Simplifying
(x + -5)(x + -10) = x(x + 5)

Reorder the terms:
(-5 + x)(x + -10) = x(x + 5)

Reorder the terms:
(-5 + x)(-10 + x) = x(x + 5)

Multiply (-5 + x) * (-10 + x)
(-5(-10 + x) + x(-10 + x)) = x(x + 5)
((-10 * -5 + x * -5) + x(-10 + x)) = x(x + 5)
((50 + -5x) + x(-10 + x)) = x(x + 5)
(50 + -5x + (-10 * x + x * x)) = x(x + 5)
(50 + -5x + (-10x + x2)) = x(x + 5)

Combine like terms: -5x + -10x = -15x
(50 + -15x + x2) = x(x + 5)

Reorder the terms:
50 + -15x + x2 = x(5 + x)
50 + -15x + x2 = (5 * x + x * x)
50 + -15x + x2 = (5x + x2)

Add '-1x2' to each side of the equation.
50 + -15x + x2 + -1x2 = 5x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
50 + -15x + 0 = 5x + x2 + -1x2
50 + -15x = 5x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
50 + -15x = 5x + 0
50 + -15x = 5x

Solving
50 + -15x = 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.
50 + -15x + -5x = 5x + -5x

Combine like terms: -15x + -5x = -20x
50 + -20x = 5x + -5x

Combine like terms: 5x + -5x = 0
50 + -20x = 0

Add '-50' to each side of the equation.
50 + -50 + -20x = 0 + -50

Combine like terms: 50 + -50 = 0
0 + -20x = 0 + -50
-20x = 0 + -50

Combine like terms: 0 + -50 = -50
-20x = -50

Divide each side by '-20'.
x = 2.5

Simplifying
x = 2.5

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